Switch for starter systems



June 16, 1942. J, KRNBERGER 2,286,682

SWITCH FOR STARTER SYSTEMS Filed Feb. 20, 1941 m 56. EM)

r U W Patented June 16, 1942 UNITED Sll/ITCH FOR STAR ER SYSTEIVIS 1 Claim.

This invention relates to internal combustion engines and more particularly the electric starting systems thereof.

The primar object of this invention resides in the provision of an electric starting system for internal combustion engines, particularly those used in automobiles, adapted to start the same prior to starting in low and freezing temperatures.

Another object of this invention resides in the provision of an electric starting system for automobiles consisting of a dual source of electricity, the un ts of which are adapted to be selectively connected to the starter of the engine.

A further object of this invention resides in the provision of an electric starting system for automobiles consisting of a dual source of electricity the units of which are adapted to be electrically connected to the starter of the engine either singularly or in conjunction with one another.

A still further object of this invention resides in the provision of an electric starting system for automobiles consisting of a dual source of electricity, the circuits of which are adapted to be controlled by means whereby either or both of the electric sources of supply may be connected to the starter of the engine.

Aside from the aforesaid objects this invention resides in the particular construction of the switch.

Among the many objects of this invention is the particular construction and arrangement of the stationary contact blades of the switch relative to the movable blades thereof.

With these and other objects in View this invention relates to certain novel features of construction and arrangement of elements to be hereinafter set forth in the specification, illustrated in the accompanying drawing and pointed out in the appended claim and, while this disclosure depicts my pres nt conception of the invention, the right is reserved to resort to such changes in construction and arrangement of elements as come within the scope of the claim.

In the accompanying drawing forming a part of this application:

Fig. 1 is a diagrammatic view of the electric starting system of an internal combustion engine as constructed in accordance with this in- Vention.

Fig. 2 is a front View of the switch showing the movable contact blades in open position.

Fig. 3 is a side View thereof showing the movable contact blades open in full lines and closed in their several positions by dotted lines.

Fig. 4 is a detail perspective view of a portion of the base of the switch with the stationary blades supported thereby.

In the present embodiment of this invention the letter M designates an internal combustion engine, preferably mounted in an automobile, and having the usual electric starter S. The starter S is electrically connected to pivoted blades 5 of a switch 5 by a conduit 1, adapted to be electrically connected to batteries A and B through the instrumentality of conduits 8, 9, li] and II with the terminals of conduits 8 and 9 disposed for dual contact with the pivoted blades 5 While the terminals of conduits l0 and II are disposed for selective connection thereto by the pivoted blades.

With the switch 6 so disposed relative to the contacts of the aforesaid conduits 8 and 9, electric energy is transmitted from batteries A and B to the starter S so as to start the engine M under a heavy load caused by the lubricant therein becoming congealed during freezing temperatures while starting under normal or high temperatures is caused by manipulating the pivoted blades alternately into engagement with either of the terminals or conduits I0 and l l.

The blades 5 are pivotally secured to a substantially U-shape bracket [2 mounted on a dielectric base I3 as by a terminal bolt 14 bearing against a substantially V-shape boss [5 formed on the base, said bolt l4 being utilized to electrically connect the conduit 1 to the blades '5.

Secured as by terminal bolts E6 to the dielectric base are stationary contact blades I! and I8 each comprising parallel members l9 and 20 disposed in close relation as indicated at 2| with certain areas thereof Widely separated as at 22 to form dead areas spaced out of horizontal alignment beyond the base so as to permit a1- ternate engagement of the pivotal blades 5 with the stationary blades When connecting either of conduits l0 and II to conduit 1.

The free ends of stationary blades l1 and I8 are directed laterally as indicated at 23 to permit the pivotal blades 5 to readily enter between the members thereof.

In order to establish rigidity between the stationary blades and base they are secured thereto against the base of the boss by the terminal bolts l6.

Connecting the free ends of the pivotal blades 5 is a dielectric handle 24 of any approved type.

With this invention fully set forth it is manifest that means are provided whereby the engine of automobiles can be readily started in either low or high temperatures and, through the simplicity of the embodiment thereof, the same can be cheaply manufactured and installed in the conventional starting systems of internal combustion engines with the minimum degree of labor.

Having thus described my invention What I claim and desire to protect by Letters Patent is:

An electric switch comprising a dielectric base, a substantially V-shape boss formed on the face of the base with its apex and base forming shoulders disposed inwardly of the adjacent edges of the base, a substantially U-shape terminal bracket seated on the base and resting against the shoulder at the apex of the boss, a terminal bolt securing the U-shaped bracket on the base, substantially L-shape stationary contacts formed of pairs of elongated resilient members having offset areas unequal distances from the base seated on the base with their inner bent ends resting against the shoulders at the base of the boss, terminal bolts securing the stationary contacts on the base, contact blades pivotally secured to the U-shape bracket for initial entrance between companion members of each stationary contact simultaneously and alternately lodge between the ofiset areas in disconnected electrical relation therewith when swung toward the base, a dielectric handle connecting the pivoted blades, an electric conduit connected to the terminal bolt of the U-shape bracket and an electric conduit from different sources of electric supply connected to each terminal bolt of the stationary brackets.

FRANK J. KIRNBERGER. 

